JPH11301528A - Opening/closing device of rear plate and rotating type door of vehicle load-carrying platform - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rear plate of a load carrying platform of a vehicle which can be used as a general transport vehicle and for a dump truck, which is a rotating type door and which is capable of rotating with a side plate upper edge rear end of the load carrying platform as the fulcrum as well as an opening/closing device of a rear-rotating type door which does not require power for operation. SOLUTION: Both open ends of a 'U' shaped frame 9 are fixed to shafts of the upper edge rear ends of both side plates of the load carrying platform. An engaging fixture 11 with which the frame 9 automatically opens when the forward part of the load carrying platform is raised is attached to a lower end horizontal frame 9a of the frame 9 and the load carrying platform. An engaging device 17 which rotatably engages the side edge of a rotating type door 12 with the frame 9 via a hinge and which engages the lower end frame 12a of the rotating type door 12 and the lower end horizontal frame 9a of the frame 9 is attached to the lower end horizontal frame 9a of the frame 9 and the load carrying platform. The engaging device 17 is fixed to a protruding portion 19 wherein the tip portion is attached to the lower end frame 12a. A head portion of an engaging rod 20 inserted into a vertical through hole formed in the lower end frame 12a lower and an opposing vertical hole formed in a lower end flat frame 9a is fixed to the tip portion and the rear end portion is made a grip portion 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-sided double door or a single door which can be opened and closed by rotating around a side (hereinafter referred to as a rotary door). The back plate of the carrier that can rotate around the upper end, and
The present invention relates to a hinge device in which a hinge of a revolving door does not protrude to the side of the door, and an opening and closing device for the revolving door.

[0002]

2. Description of the Related Art The rear wall of a conventional dump truck carrier has two upper ends fixed to the rear ends of upper edges of both side walls of the carrier, and a lower edge locked to the carrier, and the front of the carrier rises. When the carrier is tilted, the lower edge is unlocked and the rear wall is rotatable. Conventionally, there is a transport vehicle in which a rear wall of a loading bed has a hinged hinged door.

[0003] Conventionally, as a device for opening a rotating door,
As shown in Fig. 7, a metal bar is bent into an L-shape.
With a vertical portion formed in the lower end frame 3 of the revolving door 2 and a corresponding base or ground (e.g., a car carrier or a warehouse entrance) corresponding to the vertical through hole 4. ) Is pressed into a vertical hole 6 provided in the rotary door to prevent the revolving door from being opened.

[0004]

The rear wall of a conventional dump truck carrier is convenient for loading earth and sand, etc., which can be scooped by a shovel truck bucket, on the cargo carrier, and for removing the earth and sand from the cargo carrier. , Only pivot about the upper end, the rear wall is still between the side walls of the carrier,
The rear wall hinders the loading and unloading of furniture, machinery, and the like that cannot be scooped by a bucket, which is very inconvenient and hinders the use of the car for other purposes than as a dump truck.

Conventionally, in the case where the rear wall of the bed is a revolving door using a hinge, the width of the bed becomes wider due to the protruding portion because the hinge shaft projects to the side of the door. ,
The car will be recognized as a large car up one rank, which will increase taxes and other expenses.

In the conventional clasp 1, when the revolving door 2 is to be opened, the clasp 1 must be lifted and a vertical portion must be pulled out from the vertical hole 6. It is difficult to lift the horizontal part by hand, and it is necessary to pry the tip of a screwdriver or crowbar under the horizontal part and lift it. Further, when the stopper 1 is rusted, it is particularly difficult to lift the stopper 1.

[0007] The present invention relates to a rotating door, and a rear wall of the loading platform in which the door is rotatable around upper ends on both sides, and a hinge device in which the hinge of the rotating door does not protrude to the side of the door. It is another object of the present invention to provide an opening / closing device that can easily open and close the revolving door with one hand and release the revolving door without using a tool such as a screwdriver or a crowbar.

[0008]

[MEANS FOR SOLVING THE PROBLEMS] A U-shaped frame,
At the rear end of the upper edge of both side plates of the car carrier, a U-shaped frame that can be pivoted with the U-shaped open end facing upward and a lower edge horizontal frame of the U-shaped frame A locking device that locks the loading platform and is automatically unlocked by the inclination of the loading platform due to the forward rise of the loading platform; and a side edge hinged to both vertical frames of the U-shaped frame by hinges. A protruding portion provided with a rotating door that is stopped and a front end portion of an operating member having a rear end portion as a grip portion, which is provided below a horizontal frame at a lower edge of the rotating door or a vertical frame at a rotating front end of the rotating door. A vertical through-hole provided in the horizontal frame at the lower edge of the rotary door, and a head of a locking rod inserted in the vertical hole, provided in the loading platform, facing the vertical through-hole, The front end portion of the locking bar is fixed to the front or rear of the locking position of the projection by closing the revolving door and lifting or pushing down the grip portion. Inserting the vertical hole into the vertical door to prevent the opening of the rotary door, pulling the tip of the locking rod out of the vertical hole of the loading platform by pushing down or lifting the grip part in the opposite manner to the above method, and pulling the rotary door An opening / closing device that can be opened, and a backing plate of a cargo bed of the vehicle, and a lower edge horizontal frame of the U-shaped frame and the cargo bed are locked by the locking tool; And release the locking by the opening and closing device with the U-shaped frame to enable the revolving door to be opened, lock the revolving door on the U-shaped frame, close it, and raise the front of the loading platform. By tilting the carrier, the engagement between the carrier and the U-shaped frame is released, and the U-shaped frame can be rotated.

According to a second aspect of the present invention, a hinge for connecting the vertical frame of the U-shaped frame of the back plate of the car and the revolving door is provided on the rear surface of the U-shaped frame, ie, at the rear of the carrier. In the direction, a shaft is supported and fixed by an upright supporting portion, and a hinge device in which one end of a plate is rotatably secured to the shaft is fixed to the side edge of the rotary door. Then, the rotary door can be rotated by the rotation of the plate.

According to a third aspect of the present invention, a tip of an operating member having a rear end portion as a gripping portion is provided by a rotary door of a rear panel of the car and a general opening / closing device for the rotary door. The lower edge horizontal frame or the protrusion provided on the lower portion of the vertical frame of the door is fixed to the shaft, the vertical through hole provided in the lower edge horizontal frame of the door, and provided in the base,
The head of the locking rod inserted in the vertical hole facing the vertical through-hole is fixed to the front or rear of the locking position of the protrusion at the tip end, and the door is closed, By lifting or pushing down the part, the tip of the locking rod is inserted into the vertical hole of the base to lock the door, and the grip is pushed down or lifted in the opposite way to the above. Withdraw the tip of the locking rod from the vertical hole of the base,
It is possible to open the door.

[0011]

Embodiments of the present invention will be described with reference to the drawings. At the rear end of the upper edge of both side plates 8, 8 of the car bed 7, the open end of the U-shaped frame 9 is turned up, and the end is fixed with the shaft 10. The horizontal frame at the lower end of the frame 9 is raised in front of the loading platform 7 which has been conventionally used for a dump truck.
Is locked to the loading platform 7 by a known locking tool 11 which is unlocked when tilted. In order to prevent the locking tool 11 from coming off due to vibration or the like, it is preferable to further provide a locking tool 11a. The locking tool 11a is configured such that a rod is inserted into a projection having a hole formed in the horizontal frame at the lower end of the frame 9 and the loading platform 7 and locked, and the rod can be pulled out and removed. Note that the locking tool 11a may have a structure other than steam.

Two rotating doors 12 are attached to the frame 9 by hinges 13 in a double-opening manner. The hinge device 13 has a plurality of shaft support members 14 erected at a plurality of locations on the rear surface of the vertical frame of the frame 9, that is, in the rear direction of the loading platform 9, and supports the shaft 15 with the shaft support 14. The plate 16 is rotatable by rotating one end of the rotary door 1 at one end.
2 and the rotatable door 12 is rotatable.

Further, when the hinge device 13 is used, since the hinge device 13 does not protrude to the side of both vertical frames of the frame 9, the loading platform 7
Does not increase in width. Therefore, although the vehicle is not recognized as a large car one rank higher, a conventional hinge may be used in place of the hinge device 13 if this problem is not considered.

Instead of using two rotating doors 12, one rotating door that fits in the frame 9 may be used.

As a stopper for stopping the opening of the rotary door 12, a stopper 1 conventionally used is used.
2, a through hole is provided in the lower frame 12a, and a horizontal frame 9a below the frame 9 is provided.
A hole is provided opposite to the through hole of the lower frame 12a, a stopper 1 is inserted into these two holes to stop the opening of the rotary door 12, and the stopper 1 is pulled out to rotate the rotary door 12. It may be possible to open it.

However, since the conventional stopper 1 has the problem as described above, it is preferable to use the following opening / closing device 17.

The opening / closing device 17 is composed of an operating member 18, a support rod 19 fixed to the lower horizontal frame 9a and having the distal end of the operating member 18 fixed thereto, and a locking rod 20 having an upper end fixed to the operating member. Become. The operating member 18 has a distal end portion 21 branched into two.
And a grip portion 22 that follows the tip portion 21.

Between the tip portions 21, 21 branched into two,
Support rod 1 standing and fixed on the upper surface of lower frame 12a of revolving door 2
9 is inserted and rotatably locked by the shaft 23. The support bar 19 and the projection may be used. The support bar 19 or the projection may be provided on the vertical frame 12 b at the tip of the rotary door 12 on the rotation side.

The upper end of the locking rod 20 is connected to the operating member 18.
Between the end portions 21 and 21, and the end portions 21 and 2
1 is rotatably fixed to the shaft. A vertical through-hole 25 is provided in the lower frame 12a of the rotary door 12, and the loading platform 7 is correspondingly provided.
Are provided with vertical holes 26, the locking rods 20 are inserted into those holes to prevent the rotation of the rotary door 12, and the grip portions 22 are lifted to pull out the locking rods 20 from the vertical holes 26. The rotation of the door 12 is enabled.

As shown in FIG. 4, the grip portion 22 of the operating member 18 does not hit the lower frame 12a when rotating up and down or the vertical frame 27 in the middle of the door in the case of a large revolving door. ,
It is preferable that the bent portion bends with respect to the front end portion 21 so that the bent portion protrudes outward from the door when the bent portion is axially fixed to the support rod 19 or the projection.

As shown in FIG. 5, the distal end of the operating member 18 is formed by a single rod without branching.
a to the support rod 19, and further to the tip 21 a of the locking rod 2.
Zero may be fixed to the axis.

This switchgear is used as follows. That is, when the revolving door 12 is closed and the grip portion 22 is pressed down with the grip portion 22, the tip 21 or 21 a pivots downward about the shaft 23 in FIG. As a result, the locking rod 20 is lowered, and its tip enters the vertical hole 26 of the loading platform 7 to prevent the rotary type 12 from being opened.

When the revolving door 12 is opened, the grip 2
2 and push up the grip portion 22, the tip portion 21 or 21 a pivots upward about the shaft bar 23, and
When the lock bar 20 is pulled up and the lock bar 20 is pulled out from the vertical hole 26 of the carrier 7, the rotary door 12 can be turned and opened.

In the above operation, the operating member 18 acts as a lever, so that much less force is required to lower and raise the locking bar 20 by pressing down and raising the grip portion 22.

The opening / closing device 17 can be used not only for the loading platform 7 of a dump truck, but also for a refrigerating vehicle, a general transport vehicle, or a rotating door of a warehouse or the like. When the grip portion 22 is provided on the base at a lower position, the grip portion 22 can be depressed by stepping on the grip portion 22 with one foot when the grip portion 22 is pressed down.

In the operation member 18 shown in FIGS. 3 to 5, the locking rod 20 is fixed to the grip portion 22 side of the supporting rod 19, but as shown in FIG. Support rod 1
The shaft may be fixed in the direction of the tip more than 9. In these cases, the vertical through holes 25 and the vertical holes 26 for inserting the locking rods 20 are also provided.
It is provided corresponding to the position of the locking rod 20.

The use of this opening / closing device is such that when the grip portion 22 is lifted, the locking bar 20 is lowered and its tip enters the vertical hole 26, and when the grip portion 22 is pushed down, the tip of the locking bar 20 comes out of the vertical hole 26. The operating member 1 shown in FIGS.
8 except for the operation member 18 described above.

In any of the opening / closing devices of the above embodiments, the shaft 24 rotates about the shaft 23 and does not move up and down vertically.
Some dents may occur between the inner wall of the fifth and vertical holes 26 and the locking rod 20. Therefore, it is preferable to provide a laterally elongated hole in the distal end portion 21 or 21a and insert both ends of the shaft 24 into the elongated hole to lock the locking rod 20 to the distal end portion 21 or 21a.

The opening / closing device 17 according to the present invention can be used for either two double doors or one rotary door. 2
In the case of a single rotating door, both doors may be provided with this opening / closing device, and only one door is provided with this opening / closing device 17, and the door and the other door are locked by known locking means. You may.

As an example of the locking means, it is preferable to use the double door opening / closing device disclosed in Japanese Utility Model Registration No. 2514129 previously disclosed by the applicant. This opening and closing device is provided with a projection and a handle at a right angle or almost a right angle on a rod body vertically supported rotatably about a vertical center line on one of the double doors, At the tip, the other end of the arm having a hook at the tip is axially fixed, and the other door is provided with a hook receiving portion to which the hook can be locked, and by the rotation of the rod by the handle, The hook portion of the arm portion projects in the direction of the other door, or retreats, and the hook portion is locked to the hook receiving portion, or
It has made its release possible.

Since the opening / closing device according to the present invention is mounted below the door, if it is used alone, in the case of a double door, the two doors tend to rotate upward by wind or some pressure, and excessive force is exerted on the opening / closing device. work. The same applies to the case of a single revolving door. In order to solve this problem, both of the two doors are well-known so that the upper ends of the two doors do not rotate at the upper part of the joint between the two doors or at the upper part of the joint between the one door and the entrance frame. Lock with the lock.

The rear plate composed of the frame 9 of the car carrier and the revolving door 12 is used as follows. That is, when the vehicle is used as a general transport vehicle, the opening / closing devices 17 and 28 are operated with the locking device 11 or with the frame 9 locked to the carrier 7 by the locking devices 11 and 11a. The revolving door 12 is opened and closed to load and unload furniture, machinery, and the like on the cargo bed. When the car is used as a dump truck, the locking tool 11
Alternatively, in a state where the frame 9 is locked to the loading platform 7 with the locking tools 11 and 11a and the rotary door 12 is closed by the opening and closing devices 17 and 28, earth and sand, coal, industrial waste, and the like are loaded on the loading platform, and the loaded products are loaded. In order to lower the lock, the locking tool 11a is removed, the front of the loading platform 7 is raised, and the loading platform 7 is tilted. When the locking tool 11 is released, the frame 9 is moved to the axis at the rear end of the upper edge of the side plate 8 of the loading platform 7. The load is supported by 10 and hangs down, the space between the frame 9 and the rear end of the carrier is opened, and the load slides off the carrier 7.

[0033]

According to the present invention, the rear plate of the carrier comprises a frame rotatable at the upper ends on both sides and a revolving door provided on the frame. In addition, the frame can be locked to the carrier without rotating, and the rotating door can be opened and closed, so that general cargo such as furniture store machinery can be loaded and unloaded on the carrier.

In the hinge device according to the present invention, when the rotary door is mounted on the carrier using the hinge device, the hinge device is accommodated in the width of the platform and does not protrude to the side of the platform width. It is not certified as a large car.

The rotary door opening / closing device according to the present invention does not require the use of any other tool, and can be easily operated by the lever action with one hand or one foot without using a rubbing force.

[Brief description of the drawings]

FIG. 1 is a front view of a rear plate of a carrier.

FIG. 2 is a perspective view showing a state in which a back surface plate is rotated while a loading platform is inclined.

FIG. 3 is an explanatory view of a state in which a door is closed using the opening / closing device according to the present invention.

FIG. 4 is a plan view of the switchgear according to the present invention.

FIG. 5 is a plan view of another embodiment of the switchgear according to the present invention.

FIG. 6 is an explanatory view of a state in which a door is closed using another embodiment of the opening / closing device according to the present invention.

FIG. 7 is a plan view showing a state where a door is closed using a conventional opening / closing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stopper 2 Rotary door 3 Lower end frame 4 Vertical through hole 5 Base 6 Vertical hole 7 Carrier 8 Side plate 9 Frame 10 Axis 11 Locking tool 12 Rotary door 13 Hinge device 14 Support member 15 Shaft 16 Plate 17 Opening / closing device 18 Operating member 19 Supporting rod 20 Locking rod 21 Tip 22 Gripper 23 Shaft rod 24 Shaft rod 25 Vertical through hole 26 Vertical hole 27 Vertical frame 28 Locking device

Claims (3)

[Claims] 1. A U-shaped frame which is rotatable at the rear ends of the upper edges of both side plates of a car carrier, with the open front end of the U-shape facing upward. A frame, a lower end horizontal frame of the U-shaped frame, and a locking device that locks the loading platform and the locking device is automatically released by the inclination of the loading platform due to the elevation of the loading platform; A rotating door having side edges hinged to both vertical frames of the U-shaped frame, and a front end of an operating member having a rear end portion as a grip portion, the lower edge horizontal frame or the rotating edge of the rotating door. It is fixed to a projection provided at the lower part of the vertical frame at the rotating tip of the rotary door, and a vertical through-hole provided in the horizontal frame at the lower edge of the rotary door, and provided on the loading platform, facing the vertical through-hole. Hold the head of the locking rod inserted in the vertical hole,
The tip of the locking bar is fixed to the front or rear of the locking position of the protrusion at the front or rear, by closing the revolving door and lifting or pushing down the grip portion, the tip of the locking bar becomes Inserting the vertical hole into the vertical door to prevent the opening of the rotary door, pulling the tip of the locking rod out of the vertical hole of the loading platform by pushing down or lifting the grip part in the opposite manner to the above method, and pulling the rotary door An opening / closing device capable of opening, wherein the lower edge horizontal frame of the U-shaped frame and the loading platform are locked by the locking tool, and the rotary door and the U-shaped frame are connected to each other. Release the lock by the opening and closing device to enable the rotation type door to be opened,
Lock the revolving door to the U-shaped frame, close it, raise the front of the loading platform, and tilt the loading platform to release the locking between the loading platform and the U-shaped frame and remove the U-shaped frame. A back plate for a car carrier, which is rotatable. 2. A hinge for connecting the vertical frame of the U-shaped frame and the revolving door to the rear surface of the U-shaped frame. It is supported and fixed, and one end of a plate is rotatably fixed to the shaft rod, and the plate is fixed to the side edge of the rotary door, and the rotary door is rotated by the rotation of the plate. 2. The back plate of a car carrier according to claim 1, wherein the back plate is capable of being used. 3. A front end portion of the operating member having a rear end portion as a grip portion is fixed to a lower edge horizontal frame of the door or a projection provided at a lower portion of a vertical frame of the door. The vertical through hole provided, and the head of the locking rod, which is provided in the base, is opposed to the vertical through hole, and is inserted through the vertical hole, and is located either before or after the axle stop position of the protrusion at the distal end. The door is closed, the door is closed, and the grip is lifted or depressed, whereby the tip of the locking rod is inserted into the vertical hole of the base to lock the door, and the opposite is performed. A door opening / closing device that enables the opening of the door by pulling out the tip of the locking rod from the vertical hole of the base by pushing or lifting the grip portion in the opposite manner to the above method.